Pairing symmetry \(\phi = 0\) . Three dimensional superconductors in class DIII with \(\phi = 0\)  can be constructed from two dimensional class D superconductors with \(\phi = 0\)  using the dimensional raising map as we also used in Appendix REF . It has been shown using the reflection matrix dimension reduction scheme in Ref. [1]} that the dimensional raising map preserves anomalous states at defects.
